While Gujarat Chief Minister Narendra Modi is likely to announce the progress of the investigations in the state capital on Saturday, the sources told rediff.com that the mastermind behind the blasts is a mufti (Islamic teacher) who has been arrested from a madrasa in Uttar Pradesh.

His background is being investigated as he operates under different aliases, like Ahmed Rashid and Abu Bakar Ismail. The Gujarat police suspect that he had migrated to UP from Hyderabad.

However, what makes the arrest interesting is that the investigators are said to have got details from him of the terrorists involved in the bomb blasts in Malegaon, Jaipur, Bengaluru and Ajmer as well.

While the details of the investigation will be revealed on Saturday, it is learnt that an accomplice of the mufti has eluded the cops in Maharashtra.

With this arrest, the Gujarat police may get credit for the first-ever insight into the group which has wreaked havoc in different parts of the country in the last four years.

Police officers investigating the case were tight-lipped and refused to reveal any details before the political leadership made it public.